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Finding the Fourth Proportional to 16,172.80, 24,230.40 and 13,235.20

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Solution

The fourth proportional to 16,172.80, 24,230.40 and 13,235.20 is: 19,829.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,172.80 : 24,230.40 = 13,235.20 : x
  2. Step 2: Convert to fraction form
    16,172.80/24,230.40 = 13,235.20/x
  3. Step 3: Cross multiply
    16,172.80x = 24,230.40 × 13,235.20
  4. Step 4: Simplify right side
    16,172.80x = 320,694,190.08
  5. Step 5: Solve for x
    x = 320,694,190.08/16,172.80
  6. Step 6: Final answer
    x = 19,829.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.